docker基除命令

運行 Centos7容器

docker  run    -it       centos:7 
       子命令   選項      鏡像名稱:標簽
       i   持續保持的意思
       t   分配一個tty終端鏈接

• 假如運行的鏡像不在本地，會自動從 Docker hub (鏡像倉庫)下載到本地，之后再運行，

[root@docker /]# docker run -it centos:7
Unable to find image 'centos:7' locally
7: Pulling from library/centos
75f829a71a1c: Pull complete
Digest: sha256:19a79828ca2e505eaee0ff38c2f3fd9901f4826737295157cc5212b7a372cd2b
Status: Downloaded newer image for centos:7
[root@652278f57c36 /]#      進入容器了

查看本地鏡像

• 使用命令 docker images 或者 docker image ls

[root@docker /]# docker images 
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
centos        7         8652b9f0cb4c   4 months ago    204MB
hello-world   latest    bf756fb1ae65   15 months ago   13.3kB
[root@docker /]# 

[root@docker /]# docker image ls
REPOSITORY    TAG       IMAGE ID       CREATED         SIZE
centos        7         8652b9f0cb4c   4 months ago    204MB
hello-world   latest    bf756fb1ae65   15 months ago   13.3kB
[root@docker /]# 

查看容器

• 查看所有的容器

[root@docker /]# docker ps -a
CONTAINER ID   IMAGE         COMMAND       CREATED          STATUS                          PORTS     NAMES
652278f57c36   centos:7      "/bin/bash"   3 minutes ago    Exited (0) About a minute ago             upbeat_driscoll
c80c3601b538   hello-world   "/hello"      15 minutes ago   Exited (0) 15 minutes ago                 hopeful_lumiere
4508a9b84140   centos:7      "bash"        23 minutes ago   Exited (0) 23 minutes ago                 vigilant_wiles
46686241dc6a   centos:7      "bash"        37 minutes ago   Exited (0) 37 minutes ago                 thirsty_heisenberg
[root@docker /]# 

• 查看開啟狀態的容器

[root@docker /]# docker ps 
CONTAINER ID   IMAGE      COMMAND       CREATED         STATUS         PORTS     NAMES
652278f57c36   centos:7   "/bin/bash"   5 minutes ago   Up 4 seconds             upbeat_driscoll
[root@docker /]# 

啟動一個已經停止的容器

docker start bcbf2db9ae6a
             容器 ID

進入和退出容器

docker exec -it  bcbf2       bash
                容器 ID    容器內的命令

• 容器 ID 不必寫全，只要保證可以識別到唯一的容器即可

[root@docker /]# docker exec -it 6522 bash
[root@652278f57c36 /]#  exit
[root@docker /]#

停止容器

docker   stop  bcbf
               容器 ID
 

[root@docker /]# docker stop 6522
6522
[root@docker /]# 

洗掉容器

• 洗掉已經停止的容器

docker  rm  容器 ID/容器名稱

docker ps -a -f  status=exited   過濾除已經退出狀態的容器
[root@docker /]# docker ps -a -f  status=exited
CONTAINER ID   IMAGE         COMMAND       CREATED          STATUS                       PORTS     NAMES
652278f57c36   centos:7      "/bin/bash"   14 minutes ago   Exited (137) 4 minutes ago             upbeat_driscoll
c80c3601b538   hello-world   "/hello"      26 minutes ago   Exited (0) 26 minutes ago              hopeful_lumiere
4508a9b84140   centos:7      "bash"        34 minutes ago   Exited (0) 34 minutes ago              vigilant_wiles
46686241dc6a   centos:7      "bash"        47 minutes ago   Exited (0) 47 minutes ago              thirsty_heisenberg
docker ps -aq -f  status=exited  只顯示ID
[root@docker /]# docker ps -aq -f  status=exited
652278f57c36
c80c3601b538
4508a9b84140
46686241dc6a
[root@docker /]# docker rm $(docker ps -aq -f  status=exited)   把已經停止的容器全部洗掉
652278f57c36
c80c3601b538
4508a9b84140
46686241dc6a